law enforcement sources say the terror suspect dzhokar tsarnaev is aquake and they're questioning him regarding whether he had accomplices or if there are unexplode bombs in the area. the issue is that he still has a severe wound to his neck so he is not able to speak. right now he is communicating through writing. this is nearly one week since the terror attack. ♪ >> the grieving and healing continues in boston, with families gathering to honor the victims at sunday mass. ♪ america, america,. ♪ god shed his grace on thee -- . >> a growing memorial at the finish line. >> we had to do this for the children, our children, and the children of boston and everywhere. reporter: charges are expected to be filed soon against the second suspect. dzhokar sauer never. >> and the an elite federal investigation team is standing by, wanting to know where they trained, who they trained with, and whether any other attacks were planned. >> they had other bombs. they didn't think they would get caught and were probably planning to do something else. >> of an intense shotout, tamerlan was killed,